نتایج جستجو برای: watershed management extension

تعداد نتایج: 1003883  

2006
Clifford A. Shaffer Naren Ramakrishnan Layne T. Watson Randy Dymond Vinod Lohani

Effective watershed management requires that decision-makers receive input about, and balance consideration of, a number of competing factors. The fundamental drivers of watershed change are modifications to landuse and settlement patterns. To model the effects of landuse and settlement changes properly requires, at a minimum, the ability to model effects related to surface and subsurface hydro...

2014
Lindell Ormsbee Malissa McAlister

Following an increased emphasis on watershed management by the U.S. Environmental Protection Agency (EPA) in the 1990s, the Kentucky Division of Water (KDOW) developed and implemented a watershed-management framework process for the state of Kentucky in 1997. The Kentucky Water Resources Research Institute (KWWRI) coordinated the first implementation of the framework process in the Kentucky Riv...

2003
N. CHRYSOULAKIS M. DIAMANDAKIS

In this study, ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) stereo imagery was analysed in combination with Global Positioning System (GPS) data and field observations, using Geographical Information Systems (GIS) techniques to examine the potential of satellite remote sensing to support watershed management. Terrain elevation data were derived for the region of Herakl...

2017
Lin-Yi Tsai Chi-Feng Chen Chi-Hsuan Fan Jen-Yang Lin

Models are necessary tools for watershed management. However, applying watershed models is time consuming and requires technical knowledge, including model selection and validation. The objective of this study is to assess two commonly used watershed models and their parameter sensitivity to reduce model loadings and to gain a better understanding of the model performances. The Hydrological Sim...

2003
Daniel Andresen Mitchell Neilsen Gurdip Singh Prasanta Kalita

The DHARMA domain-specific middleware system is intended to allow hydrologic field engineers to tackle water-management problems on a scale previously impossible without sophisticated computational management systems. DHARMA provides automatic data acquisition via the Internet; data fusion from online, local, and cached resources; smart caching of intermediate results; parallel process executio...

Journal: :Environmental Modelling and Software 2013
Karim J. Chichakly William B. Bowden Margaret J. Eppstein

One challenge of climate change adaptation is to design watershed-based stormwater management plans that meet current total maximum daily load targets and also take into consideration anticipated changes in future precipitation patterns. We present a multi-scale, multiobjective framework for generating a diverse family of stormwater best management practice (BMP) plans for entire watersheds. Ea...

P. Alimoradian S. Dehyouri Sh. Bayat

The major purpose of this study is to assess the perception of managers in the Forest, Range and WatershedOrganization. It is an applied study by using descriptive–correlative method. A questionnaire was developedand data collected from 105 respondents. The validity and reliability of questionnaires was verified. Theresults of study show that there was a relationship between educational level, ...

Journal: :Ambio 2009
Chongyun Wang Peter van der Meer Mingchun Peng Wim Douven Rudi Hessel Chenlin Dang

In the Langcang (Upper-Mekong) watershed, degraded watershed ecosystems in upland areas threaten cultivation practices, water resources, and dam development downstream. Assessment of ecosystem services and the factors that threaten them is an important first step to support watershed management. This, however, requires detailed information that is often missing in mountainous regions. To overco...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2010
F R Spilki J G Tundisi

The Sinos River Basin is often mentioned as a highly degraded watershed. A series of impacts on water quality, soil and air has been reported in this environment on a recurring basis over the years. This situation of environmental degradation has its origins in a process of huge economic development uncoupled from environmental conservation concerns. The intense consequent urbanization observed...

2017
Yiqun Xie KwangSoo Yang Shashi Shekhar Brent Dalzell David Mulla

Given an agricultural watershed containing a set of spatial units, and a set of land management practices, the Geodesign Optimization (GOP) aims to find a land management practice for each spatial unit that optimizes overall water quality improvements in the watershed under both budget constraint and spatial constraints (e.g., minimum contiguous area, shape) arising from farm equipment operatio...

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